Oil-separator.



H. K. HUGHES.

OIL SEPARATOR.

APPLICATION FILED NOV. 3, 1914- Patented Mar. 9, 1915.

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WITH/8858 H. K. HUGHES.

OIL SEPARATOR.

APPLICATION FILED Now/.3, 1914.

l y, l 3 l Q43 Patented Mar. 9, 1915.

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H. K. HUGHES.

OIL SBPARATOR.

APPLICATION NLBD Nov.s,1914.

Patented Mar. 9, 1915.

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Armen/Ey arating or inlet chamber 2 and a secondary L Il 012D HUG'HES, 0F BROOYN, NEW YORK.

OIL-SEFARATUB pecication of Letters Patent.

Patented blair. d, 1915i..

Application filed November 3, 1914i. Serial No. 070,000.

To all w71 om it may concern Be it known that l, HAROLD K. HUGHES, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, State of New York, have invented certain new and useful Improvements in Oil-Separators, of which the following is a specification.

The object of my invention is toprovide an e'ective, simple and convenient apparatus for separating oils from water, and also for removing the solids which may be present in the mixture. y

'l he separator is designed more particularly for installation in drainage systems leading from floors of buildings, to enable the removal and recovery of oils which would otherwise accumulate on the premises but which, mixed with water and more or less solid matter, may be carried od by suitable drains to the separator.

lin the accompanying drawings illustrating the invention: Figure 1 is a front elevation of thev separator Without the access well; Fig. Q'is a plan view lshowing the separator with the access well,l the cover of the latter being partly broken away and Fig.

3 is a side view ofthe separator, with 4aportion of the accesswell.

The separator comprises a primary sepor main separating chamber 3, preferably consisting of smaller and larger metal tanks secured side by side. The inlet 4 from the floor drains delivers substantially horizontally into the upper and front part of the primary chamber, the arrangement being such that the influent impinges against the solid portion of the wall -5 separating the chambers, thus causing the influent to throw down its solids of a greater specific gravity than waterf The lower part of the chamber 2 constitutes a sedimentation basin, having a bottom 6 sloping to a discharge 7 controlled by a quick-operatingv valve 8.

The twol chambers are connected in series. the communication between them being at their upper portions and at a region laterallv removed from the` inlet 4. To this end the wall 5 is provided with a perforated area 9 in its upper and rear portieri. These openings retain floating solids, while permitting the oil and water to pass to the secondary chamber, and their total area should be greater than the area of the drain eection. vlfhey are am to all@ upper portion of the wall, in order to prevent sediment being carried into the secondary chamber, yet extend downward a sullicient distance to avoid losing the benefit of the partial separation of water and oil which takes place in the inlet chamber. Being laterally removed from the inlet they adord sufhcient opportunity to the liquid to deposit its heavy solids before reaching the main chamber.

An uptake water outlet pipe 10 leads from the lower part of the main chamber and terminates ina down-flow pipe 11 leading to the sewer, the point of overflow bein designated 30, and being located at such height as to maintain substantially the same level in both chambers and to cause the inlet 4c to deliver the influent into the primary chamber substantially without fall. As shown, the overflow is above the bottom level of the area of communication 9 and slightly below the center line of the inlet, and it will be understood that the specific distances giving best results can be ascertained by test in any particular case. Manifestly the arrangement of the water outlet prevents escape therethrough of the oil, which is drawn olf from time to time through a stop-cock 12 at the front and upper'section of the drain tank. near the line of demarcation of the oil and water. rlhe lower' end of the pipe 10 preferably connects with the tank by a 'l' 13, which has a removable cap 14 for cleaning. The` fitting 15 connecting the pipes 10 and 1l at the top likewise has a removable cap 16. and this may fit somewhat looselv if desired. in onder to insure against siphoning. though the size of the pipe il in relation to the onantitv of flow is suilicient to prevent such acw tion.

The chambers are provided with envers 17 and" 1B'. and a vent pipe 19 extends 'from an opening in the cover 18 of chamber 3 upward t'o a suitable elevation. ln order to facilitate access when the installation is underground. a shell E20 is provided extendinaforward from the tanks. to the remote sides of which it is secured. in order to constitute an access well, where the valve 8, cock 12. etc. may be reached. This well is closed at the top bv a cover 21 resting on lugs 22 and Q3 on the shell and tank and having handles 24.- by which it may be removed.

lin operation the iuent ia deliver -beneath the elevated bottom of this chamber lto receive the sediment, and the quick opening and closing valve enabling the operation to be performed with certainty. A partial separation of the oil and water also takes place in the primary chamber, and is completed in the secondary chamber, where Vall the oils lighter than water rise and float on the surface, where they are drawn oli1 as required, the water being allowed to escape in the manner already described.

lVhat is claimed as new is:

1. An oil separator comprising separating chambers communicating in series, means for admitting the mixture to be separated i to one of said chambers, an uptake water outlet connected' with thelower part of the second chamber, means for drawing olf oil from thel upper part of the second chamber, a sedimentation basin at the bottom of the admission chamber. and means distinct from the water outlet for discharging accumulations from said basin.

2. An oil separator comprising separating chambers having means of communication between their upper portions, an inlet for admitting the mixture to be separated to one of said chambers. the said chamber having a sedimentation basin at its bottom. means for discharging accumulations therefrom, an uptake water outlet connected with the second chamber onlv and terminating in an overflow above the bottom level of the communication between the chambers. and means for drawing off oil from the-top of said' second chamber.

3. 'An -oil separatorcomprising an inclosure having an inlet for the mixture to be separated, an uptake water outlet terminating in an overflow disposed at such height Athat) the influent enters the inclosure from lsaid inletA substantially without fall. a wall opposed tdsaid inlet tov cause the influent to throw down solid matter. a sedimentation basin below said wal-l and inlet, means dis- :tinct from the water outlet for discharging .accumulations from thebottom of said basin, and means for drawing olf oil from the :upper part of the inclosure.

4. An oil separator comprising a main separating chamber, an inlet chamber alongside said main chamber and having a sedimentation basin at its bottom. an inlet delivering substantially hori7ontally into the upper part of the inlet chamber, means opposed to said inlet to cause the influent to throw down solid matter. an outlet from the upper part'of the inlet chamber to the main .chamber at a region laterally remoyed from water outlet for discharging accumulations from the bottom of the sedimentation basin.

5. An oil separator comprising a primary separating chamber, an inlet for admitting the mixture thereto, means for collecting solids of greater specific gravity than water in the lower part of said chamber and discharging 'the accumulations therefrom from time to time, a secondary separating chamber in communication with the upper part of the primary chamber, means for retaining solids of less specific gravity than water in said primary chamber, an uptake water outlet connected with the lower part of said secondary chamber only, and means for.1

drawing off oil from the upper part thereof.

6. An oil separator, comprising primary and secondary chambers having a wall therebetween, an inlet arranged to deliver the influent into the primary chamber toward the secondary chamber against said wall, said wall having an opening connecting the upper parts of the chambers at a region laterally removed from said inlet` an uptake water outlet from the lower part of the seclondarychamber, means for drawing off oil from the upper part thereof, and means distinct from the water outlet for discharging accumulations of solids from the bottom of the primarv chamber.

7. An oil separator, comprising primary and secondary chambers having a wall therebetween. an inlet arranged to deliver the influent into the primary chamber toward the secondary chamber against said wall. said wall being for the most part solid but having a perforated area in its upper portion laterally removed from the inlet. a sedimentation basin at the bottom of the primary chamber, means for discharging accumulations from time to time from said basin. an uptake water outlet from the lower part of the secondary chamber, and means for drawing ofil oil from the upper part thereof.

8. An oil separator comprising` a main` tank, an inlet chamber alongside the main tank and having a bottom above the bottom of the main tank and sloping to a discharge, a quick-operating valve controlling said discharge, an inlet opening into the upper part' means for drawing olf oil from the upper part thereof.

9. An oil separator comprising a main separating chamber. an inlet chamber alongside the main chamber and having means of communication therewith, a sedimentation` basmat the bottom yof saidinlet chamber,

mamme means for discharging accumulations from In Witness whereof, have hereunto se?, sald basm from tune to tune, an uptake Wumy hand this second day of November, one terr outlet from the lower part of szud mam thousand nme hundred and fourteen.

chamber, and means for drawing o1 oil HAROLD K. HUGHES. from the upper part thereof, in combination Witnesses: with u shell extending from said chambers CLARENCE G. GALSTON,

at one side and affordlng'an access well. S. J. GIBSON. 

